Genesis 19:31-34“Then the firstborn said to the younger, “Our father is old, and there is not a man on earth to come in to us after the manner of the earth. Come, let us make our father drink wine, and let us lie with him that we may preserve our family through our father.” So they made their father drink wine that night, and the firstborn went in and lay with her father; and he did not know when she lay down or when she arose.”

Whenever you hear of professing Christians who have fallen into gross sin, you ask yourself, “How did they ever get to this low-level?” If the people involved had made no claim of being Christians, it would be one thing. But when they claim to know God and then commit the worst kind of sins imaginable, you wonder what’s going on.

Lot’s story is like that. If Lot were not a believer, you would say, “That’s the way this evil world is.” But Peter emphasizes that Lot was a righteous man (2 Pet. 2:7-8). So when you read about his two daughters getting him drunk and committing incest with him, you wonder how a believer could get to that low point. Lot’s terrible sin should make us realize that just being a believer isn’t enough. Christians can fall into sins that are just as bad as those committed by unbelievers. Though Lot was a believer, he failed miserably with God and as a father. I want to examine why, so that none of us will fail the Lord and our families as Lot did.

The reason Lot failed is illustrated by an event that happened on June 5, 1976. On that day, under clear skies, without warning, the massive Teton Dam in southeastern Idaho collapsed, sending a torrent of water surging into the Snake River basin. There was extensive property damage and loss of life. It seemed to happen so quickly. Some workers on the dam barely had time to run for their lives. But it really didn’t happen suddenly. Beneath the water line, a hidden fault had been gradually weakening the entire structure. It started with just a tiny bit of erosion. But by the time it was detected, it was too late. No one had seen the little flaw; no one got hurt by it. But everyone saw the big collapse, and many were hurt.

That’s what happened to Lot. He allowed little sins in his life to go unchecked. They weren’t major, shocking kinds of sins – just “little” sins. I’m using the words “little” and “big” from the human perspective. By little sins I mean sins that people don’t consider serious, sins that we all tend to tolerate. By big sins, I mean sins like murder, adultery, incest, child abuse – sins that raise eyebrows and make us recoil in shock, sins that destroy families and reputations, leaving a trail of destruction. With Lot, the little sins were steadily eroding his moral character, until finally the sordid incident recorded here burst the dam. When little sins to go unchecked, they result in big sins.